Vegetables sellers wait for customers at a market with a backdrop of the Mount Agung volcano erupting in Karangasem, Indonesia, Monday, November 27, 2017. Indonesia authorities raised the alert for the rumbling volcano to highest level on Monday and closed the international airport on tourist island of Bali stranding thousands of travelers. (Photo by Firdia Lisnawati/AP Photo)

A motorcyclist passes by the Mount Agung volcano erupting in the background in Karangasem, Indonesia, Monday, November 27, 2017. (Photo by Firdia Lisnawati/AP Photo)

Black clouds overshadows Mount Agung are seen in Abuan village of Karangasem regency, 7 kilometers from the erupted Mount Agung in Bali, Indonesia on November 26, 2017. (Photo by Mahendra Moonstar/Anadolu Agency/Getty Images)

A view of the Mount Agung volcano erupting in Karangasem, Bali, Indonesia, Monday, November 27, 2017. The volcano on the Indonesian tourist island of Bali erupted for the second time in a week on Saturday, disrupting international flights even as authorities said the island remains safe. (Photo by Firdia Lisnawati/AP Photo)

Villagers on their motorbikes after evacuating from their homes which are located near to the crater of Mount Agung, in Besakih village, Karangasem, Bali, Indonesia, Saturday, November 25, 2017. A volcano on the Indonesian tourist island of Bali erupted for the second time in a week on Saturday, disrupting international flights even as authorities said the island remains safe. (Photo by Firdia Lisnawati/AP Photo)

Balinese people look at Mount Agung during an eruption seen from Kubu sub-district in Karangasem Regency on Indonesia's resort island of Bali on November 26, 2017. Mount Agung belched smoke as high as 1,500 metres above its summit, sparking an exodus from settlements near the mountain. (Photo by Sonny Tumbelaka/AFP Photo)

Mount Agung volcano is seen spewing smoke and ash in Bali, Indonesia, November 26, 2017 in this picture obtained from social media. (Photo by Emilio Kuzma-Floyd/Reuters)

Mount Agung volcano erupts as seen from Besakih Temple in Karangasem, Bali, Indonesia on November 26, 2017. (Photo by Johannes P. Christo/Reuters)

Plants in a garden are covered in ash from the eruption of Mount Agung volcano in Jungutan Village, Karangasem, Bali, Indonesia on November 26, 2017. (Photo by Nyoman Budhiana/Reuters/Antara Foto)

Balinese sell produce at a streetside market as Mount Agung volcano erupts at Culik village market in Karangasem, Bali, Indonesia on November 27, 2017. (Photo by Johannes P. Christo/Reuters)

Villagers rescued by National Search and Rescue Agency are seen in a truck, due to the eruption of Mount Agung in Karangasem Bali resort island, Indonesia on November 27, 2017. (Photo by Johannes P. Christo/Reuters)

Primary school children play outside their classroom as Mount Sinabung, active since 2010, erupts in the distance in Naman Teran Village, Karo, North Sumatra, Indonesia on November 13, 2017. (Photo by Albert Damanik/Reuters)

Villagers walk to pray near their make-shift shelter in a refugee camp due to the eruption of Mount Agung in Karangasem, Bali Resort island, Indonesia on November 27, 2017. (Photo by Johannes P. Christo/Reuters)

Cooled lava is seen near the base of Mount Agung, in Bali, Indonesia on November 27, 2017. (Photo by Ikomang Sumerta/Reuters)

Motorists drive on a road covered in volcanic ash from Mount Agung's eruption in Karangasem, Bali, Indonesia on November 26, 2017. (Photo by Johannes P. Christo/Reuters)

Indonesia's Mount Agung volcano erupts for a second time in less than a week as seen from the coastal town of Amed, in Bali, Indonesia on November 25, 2017. (Photo by Petra Simkova/Reuters)

A farmer ploughs his field as Mount Agung erupts in the background in Culik Village, Karangasem, Bali, Indonesia on November 26, 2017. (Photo by Nyoman Budhiana/Reuters/Antara Foto)

A woman uses an umbrella as she walks through ash from Mount Agung volcano during an eruptiuon in Bebandem Village, Karangasem, Bali, Indonesia on November 26, 2017. (Photo by Fikri Yusuf/Reuters/Antara Foto)

Mount Agung's eruption is seen next to a Balinese temple at Kubu sub-district in Karangasem Regency on Indonesia's resort island of Bali on November 26, 2017. (Photo by Sonny Tumbelaka/AFP Photo)

Motorists drive on a road covered in volcanic ash from Mount Agung's eruption in Karangasem, Bali, Indonesia on November 26, 2017. (Photo by Johannes P. Christo/Reuters)

A man sits at a temple with the Mount Agung volcano erupting in the background in Karangasem, Indonesia, Monday, November 27, 2017. (Photo by Firdia Lisnawati/AP Photo)

A family on a motorcycle passes by the Mount Agung volcano erupting in the background in Karangasem, Indonesia, Monday, November 27, 2017. Indonesia authorities raised the alert for the rumbling volcano to highest level on Monday and closed the international airport on tourist island of Bali stranding thousands of travelers. (Photo by Firdia Lisnawati/AP Photo)

General view of Mount Agung during an eruption seen from Kubu sub-district in Karangasem Regency, on Indonesia's resort island of Bali on November 26, 2017. (Photo by Sonny Tumbelaka/AFP Photo)

Balinese Hindus take part in a ceremony, where they pray near Mount Agung in hope of preventing a volcanic eruption, in Muntig village of the Kubu sub-district in Karangasem Regency on Indonesia's resort island of Bali on November 26, 2017. A volcano on the Indonesian tourist island of Bali sent plumes of grey smoke and steam thousands of metres into the air on November 26 for the third day in a week, triggering flight cancellations which have left thousands of tourists stranded, officials said Sunday. (Photo by Sonny Tumbelaka/AFP Photo)

Balinese Hindus take part in a ceremony, where they pray near Mount Agung in hope of preventing a volcanic eruption, in Muntig village of the Kubu sub-district in Karangasem Regency on Indonesia's resort island of Bali on November 26, 2017. (Photo by Sonny Tumbelaka/AFP Photo)

A boy takes pictures during Mount Agung's eruption seen from Kubu sub-district in Karangasem Regency on Indonesia's resort island of Bali on November 26, 2017. (Photo by Sonny Tumbelaka/AFP Photo)

A Balinese farmer works on his farm as the Mount Agung volcano spews volcanic ash in Karangasem, Bali, Indonesia, 26 November 2017. According to reports from the Energy and Mineral Resources Ministry's Volcanology and Geological Hazard Mitigation Center (PVMBG), the volcano has erupted and is spewing an ash cloud more than 1,500 meters in height. The airlines Jetstar and Quantas have cancelled all flights to and from Bali as a result of the eruption. (Photo by Made Nagi/EPA/EFE)

A long expossure photograph shows the Mount Agung volcano spewing hot volcanic ash as seen from Amed, Karangasem regency, Bali, Indonesia, 26 November 2017 (issued 27 November 2017). According to media reports, the Indonesian national board for disaster management raised the alert for the Mount Agung volcano to the highest status and closed the Ngurah Rai International Airport in Bali due to the ash cloud rising from the volcano. (Photo by Roni Bintang/EPA/EFE)

Balinese Hindus take part in a ceremony, where they pray near Mount Agung in hope of preventing a volcanic eruption, in Muntig village of the Kubu sub- district in Karangasem Regency on Indonesia' s resort island of Bali on November 26, 2017. A volcano on the Indonesian tourist island of Bali sent plumes of grey smoke and steam thousands of metres into the air on November 26 for the third day in a week, triggering flight cancellations which have left thousands of tourists stranded, officials said Sunday. (Photo by Sonny Tumbelaka/AFP Photo)